Rumored 6th Edition Allies

Allies in normal games. This could either the the most awesome thing ever or what breaks the game entirely. I can’t wait to see how this plays out!

What could this mean?

Fire and brimstone coming down from the skies! Rivers and seas boiling!
Forty years of darkness! Earthquakes, volcanoes…
The dead rising from the grave!
Human sacrifice, eldar and dark eldar living together… mass hysteria!

What this really caters to is those of us with *looks to the right hand menu* many 40k armies and have a different dynamic. As far as GW is concerned it entices newer players to expand out their collections to new armies from the perhaps one they may only have.